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Share-Based Compensation (Details 7) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Share-based compensation disclosures
Compensation cost	$ 13.3	$ 14.4	$ 7.4
Total Stockholder Return Awards
Share-based compensation disclosures
Shares vesting period	3 years
Compensation cost	$ 3.0	$ 1.9	$ 0.6
Total Stockholder Return Awards \| Minimum
Share-based compensation disclosures
Target shares awarded percentage	50.00%
Total Stockholder Return Awards \| Maximum
Share-based compensation disclosures
Target of target shares	200.00%

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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